SO jQuery Fiddle

Test Fiddle mainly for SO Questions jQuery 1.4.3, UI 1.8.5

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/themes/ui-lightness/jquery-ui.css">
<div id="area0">
    <div class="target">Not the Target</div>
</div>
<div id="area1">
    <div id="current_element">Current</div>
</div> 
<div id="area2">
    <div class="target">Target</div>
</div>
<div id="area4">
    <div class="target">Not the Target</div>
</div>

JavaScript

var ce = $("#current_element"), all = $("#current_element, .target");
var target = all.eq(all.index(ce)+1);
alert(target.html());